Calculating machine



March 6, 1928.

U. G. ROBINSON CALACULATING MACHINE Filed Dec. ll 1926 Sheets-Sheet l 1o m. lo.n IMl Ugsscsllablhsonwwo@ @Mar/wus;

March 6, 1928..

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Patented Mar. 6, 1928.

UNITED STATES PATENT OFFICE.

CALCULATING MACHINE.

Application filed December 11, 1926. Serial No. 154,246.

' This invention aims to provide novel means tor holding and manipulating the cards which toi-in part of a calculating inachine.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

lith the above and other objects in View which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and iu the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the .invention herein disclosed, may be made within the scope otI what is claimed, without departing from the spirit'oi the invention.

In the drawings Figure 1 shows in plan, a device constructed in accordance with the invention;

Figure 2 is a section on the line 2--2 of Figure 1;

Figure 3 is a section on the line 3-3 of Figure 1;

Figure 4 is a section on the line 4 4 of Figure 2.

In carrying out the invention, there is provided a casing including a front 1, a back 2, sides 5 and 30, and the sides 3 and 30 having inclined end edges shown at 4. A strip 5 projects inwardly from the back 2 and extends between t-he sides 3 and 30. A partition 6 extends between the sides 3 and 30, and extends from the strip 3 to a point adjacent to one end of the cabinet, so as to form a compartment 7 in which additional computing cards may be stored. The numeral 8 designates a supplemental back shaving a rectangularly disposed ange 9 alwhich engages the partition 6 at one end, the supplemental back 8 being hinged at 10 to the back 2, so as to Serve as a closure for the compartment 7. The closure composed of the parts Sand 9 is held in closed position by any suitable means such as a button 11, pivotally mounted intermediate its ends as at 12, on the back 2 and adapted "to overlap the supplemental back 8, as shown in Figure 2 of the drawings.

In the inner surface of the side 3 there is a plurality of guide grooves 14, there being as many or as few of the grooves 14, as occasion may demand. In the outer surface of the side 30 there is a guide groove 15,

rthere being one of the guide grooves 15 for each of the guide grooves 14 in the side 3. The side 30 has a slot 16 for each of the guide grooves 15, each slot 16 opening into one of the guide grooves 15. Division bars 17 extend between the sides 3 and 30 and are located at the inclined edges 4 of the sides 3 and 30.

Carrier plates 18 are provided. Each carrier plate 18 slides, at one end, in one of the grooves 14 in the side 3. At its opposite edge, and at it-s corners, each carrier plate 18 is equipped with brackets 19, in the form ot' blocks. A slide rod 2O reciprocates in the superlicial groove 15 of the side 30. The slide rod 2O is connected with one of the brackets 19 by a securing element 21. The slide rod 2O is connected to the other bracket 19 by a shank 22 of a handle 23, the shank 22 ot' the handle operating in the slot 16 of the side 30. At its lower edge, the carrier plate 18 is supplied with stops 24, and there are longitudinal guides 25 on the carrier4 plate. Into the guides 25 may be slid cards 26, the stops 24 serving to permit the sliding movement ot' the cards in the guides 25. The cards 2G may be inscribed with any suitable data, shown at 27 and facilitating the making of computations. At its edge, the carrier plate 18 is cut away, as at 28, so that the cards 26 may be pulled readily out ot the guides 25.

In practical operation, any vone oiE the carrier plates 18 and the corresponding cards 26 may be brought into View by sliding the carrier plate through the instrumentality of the handle 23 into the projecting position shown in Figures 1 and 2, and when the occasion for the use of the carrier and its parts has passed, the carrier may be drawn back again into the cabinet by means of the handle 23, the inward movement of the carrier being limited by the engagement of the securing element 21 and the inclined edge 4 of the side 30, or by engagement between the shank 22 oi the handle 23 and the side 30 at one end of the slot 16.

Although the article has been shown as laid down fiat, in a horizontal position, in Figure 2 of the drawings, it will be understood that, if desired, the device may be set upright on that end thereof which is marked by the numeral 29 in Figure 2, the showing of the drawings being precisely the same in either instance.

What is claimed is:- l

In e device of the class described, a cabinet comprising sides, one of the sides baving an external guide groove and having n.

' slot communicating with the groove7 the other of the Sides having an internal guide groove, a carrier one edge of which is mounted slidobiy in the internal groove, a slide rod mounted to reciprocate in tbe eX- meinem ULYeeEe GRANT noninfxoivf.V 

